Mike Dailly | Old school voxel landscape @MikeDailly | Uploaded April 2017 | Updated October 2024, 1 day ago.
This implements the old school voxel landscape (as seen in games like Comanche) in GameMaker Studio 2.
Download it free from the Marketplace: marketplace.yoyogames.com/assets/5283/voxel-landscape

Method described here: simulationcorner.net/index.php?page=comanche